Heat the vegetable oil in a large skillet over medium heat.

Place the steak on the skillet in an even layer. Season it with the taco seasoning. Sauté the steak for 1-2 minutes per side until it’s browned slightly.

Then add in the red bell pepper and onions and sauté them with the steak for 5-7 minutes until the steak is cooked through and the vegetables are tender.

Then top the steak and vegetables with salsa and toss to thoroughly coat the mixture with the salsa. Sauté for a few minutes to combine the flavors. Then remove the mixture from the heat.

Heat a griddle over medium high heat or you can heat a cast iron skillet.

Place the tortillas on the griddle or skillet.  Top each tortilla with a small amount of each cheese, then layer the steak and vegetables on top and then add more cheese. Carefully fold each tortilla in half making a half moon shape.

Cook until one side of the tortilla is golden brown (1-2 minutes). Flip and then cook until the other side is golden brown as well (1-2 minutes). Watch them closely as they brown quickly.

Remove the quesadillas onto a cutting board. Slice them and they are ready to serve and enjoy!